In this two-part series on arrhythmias occurring above the semilunar valve, we discuss
the relevant underlying anatomy and the technique for mapping and ablation above the
aortic and pulmonic valve. In part I, we focused on ventricular arrhythmias, and in
this paper (part II), we discuss the anatomy and present knowledge of the substrate
mapped and ablated above the aortic valve for atrial tachycardia in certain unusual
accessory pathways. The background anatomy of the aortic valve has been discussed
in part I of this series, to which the reader is referred. Here we discuss the detailed
anatomy of the aortic cusps relevant for atrial tachycardia and atrioventricular bypass
tracts. Representative cases of these supravalvar arrhythmias are presented, and an
approach for safe and effective ablation above the aortic valve to eliminate atrial
tachycardia and bypass tracts in this location is then outlined.
Keywords
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References
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Article info
Publication history
Published online: May 06, 2008
Identification
Copyright
© 2008 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.
